Abstract: In order to evaluate all the learning process, guide students to learn actively, and let information retrieval develop towards the personalized, interactive and independent trend, the examination methods of information retrieval course should be more diverse compared with the past in blended learning environment based on the combination of classroom teaching and multimedia network teaching. Multiple examination methods, including assessment at ordinary times, operation assessment and final-examination, were introduced by taking the reform of information retrieval evaluation method in Shenyang Agricultural University for example, which made students' score of information retrieval more objective and teachers' workload more reasonable with the elective rate of information retrieval rising by 10% and the utilization rate of network teaching platform increasing significantly.

Key words: Blended learning